Separable fastener.



L. T. BULLEY.

SEPARABLE FASTENER.

APPLICATION mw JuLY 3. 1911.

1,246,868. mam New 2o, 19;?.

Tn erna TEN. onirica.

LOUIS T. BULLEY, OF VEST HAVEN, CONNECTICUT, ASSIGNOR T0 C. COWLES CO., OF

NEW HAVEN, CONNECTICUT, A CGRPORATION.

seri-:initiate rsTiinnR. Y.

Specification of Letters Patent.

Patented Nov. 20, 191 '7.

Application filed July 8, 1917. Serial No. 178,332.

To czZZ whom it may concern:

Be it known that I, LOUIS T. BULLEY, a citizen of the United States, residing at IV est Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Separable Fasteners; and I do hereby declare the following, when takenin connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in`- Figure 1 a plan view of the socket-inember of a separable fastener constructed in accordance with my invention and 4shown as attached to a curtain.

Ifig. 2 an underside view ofthe socketmember, detached. p

l"ig. 3 an inside view ofthe front-plate, slide and spring, with the back-plate detached.

Fig. 4 a longitudinal sectional view showing the socket-member engaged with the post and in the locked position.

Ifig. a similar view showing the socket tilted to unlock the slide from the post.

Fig. 6 a perspective view of the slide, detached.

Fig. 7 a perspective plan view of the backplate, detached.

This invention relates to an improvement in separable fasteners, and while adapted for various purposes, is especially designed for use as a curtain fastener. In the more general construction of fasteners of this type, the socket member includes a wire which is adapted to directly engage with a post.

The object of this invention is to provide a sheet-metal slide which will positively engage with the post so as to interlock the socket therewith, and to provide that slide with a finger adapted to engage with the post and move the slide when the socket isV turned in one direction; and the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention, the socketmember 8 comprises a back-plate 9, a frontplate l0, a slide 1l, and a. spring 12. The back-plate is formed around its edge with two series of slots l1 and l5 through which project fingers 16 and 17 on the front-plate 10, the fingers 16 beingturned'down over the back-plate 9 so as to interlock the frontplate with the back-plate, the front-plate being' slightly cup-shaped so as to form ay chamber I3 between them. The lingers 17 form prongs by which the socket-member may be attached toa curtain 19. The backplate is also formed with a central opening 20 in one side of which is a notch 2l for the purpose as will hereinafter appear. The front plate 10 is formed with a central recess 22 in line with the opening 20 in the back-plate. The slide l1 is located between the front and back-plate and is formed with a clearance-opening 23 corresponding to the opening 20, and with a projecting caminger 24 which extends through the notch 21 in the back-plate and is slightly curved so as to engage with one side of a post 13. This post 13 is formed Vwith an annular groove 25 the outer wall of which forms a bearing-shoulder 26 for the slide 11. fithin the chamber 1S is an S-shaped spring l2 which bears against the wall of the front plate and against the edge of the slide 11, normally tending to crowd the finger 21 against the post 13, as shown in Figs. 4 and 5 of the drawings. The socket-member is engaged with the post by passing it over the outer end of the post, the slide moving against the pressure of the spring to permit the head of the postv to pass through the openings 20 and 23. As soon as the socket is moved onto the post sutliciently the slide will spring into the annular groove 25 and thereby firmly interlock the socket with the post. In order to move the slide out of engagement with the post, it is necessary to lift one end of the socket so as to cause the finger 24 acting like a cam, to move the slide so as to bring the opening 23 into line with the opening 20, and permit the socket to be lifted off from the post. As will be seen by Fig. 5 of the drawings, the tilting of one side of the socket` crowds the finger 24 against the side of the post so as to move the slide with respect to the front and backplates. It will thus be seen that while the socket may be readily detached from the post when the socket is tilted in one direction, the socket will be positively interlocked with the post against movement in any other direction. By using a sheet-metal locking slide a more rigid engagement is made be` tween the socket and the post than is possi- HESSUD ble when Wire springs are employed to form the lock.

Vhile I prefer to form the front plate with the recess 22 to give clearance for the head of the post,4 as in this Way the mecha- -n'isnnV .is completely housed and the possibility of dirt and water entering the` fas- Vtenerisavoidecl, it is obvious. without furanda spring between the front and back- 'plates and hearing against the said slide.

2. A separable fastener comprising a socket-member including a front and backplate, a sheet-metal slide located between the front and back-plates, said back-plate and slide each formed with perforations, the slide formed with a linger projecting outward through the back-plate, combined with a post formed with an annular groove and ada ted to extend through the pertorations in't'ie'b'ack-plate and slide, the slide adapted to enter the groove in the post, and the linger on the slide engaged with the side of the post.

3. A separable fastener comprising a socket-member including a front and back plate, afsheet-metal slide located between the front and back-plates, said back-plate and slide each orrned With perforations and the front-plate formed with a recess in line with the perforation in the back-plate, theslide formed with a finger projectingA outward through the back-plate, combined with a post formed with anannular groove and adaptedy to extend through the perforations in the back-plate and slide` the slide adapted to enter the groove in the post, and the linger on the slide engaged with the side ot the post. i A

yIn testimony whereof, I have signed this specification in the presence of two subscribing Witnesses.

LOUIS T. BULLEY.

Vitnesses:

J. GOODMAN, C. M. COSTELLO,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

